Resolve "Add the current app version in the about section"

What does this MR do and why?

• Make the application self aware of here version
• Make the application retreive the latest version and display the status to the user
  • If a update is available a badge appears with a clickable link to the release page of the latest version

Screenshots or screen recordings

Version appears in the About page :

If the application is up to date :

If an update is available :

MR acceptance checklist

• My code follows the style guidelines of this project
• I ran pylint and other linters for modified files
• I have performed a self-review of my own code and tested it
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• My code needed automated testing. I have added them (this is optional task)
• I have added user readable comment in the CHANGELOG

Closes #173 (closed)